Listen to I´m Gonna Sit Right Down & Write Myself a Letter (feat. Nelson Riddle & His Orchestra) online. I´m Gonna Sit Right Down & Write Myself a Letter (feat. Nelson Riddle & His Orchestra) is an English language song and is sung by Frank Sinatra. I´m Gonna Sit Right Down & Write Myself a Letter (feat. Nelson Riddle & His Orchestra), from the album Los 100 Años De Frank Sinatra Vol. 3, was released in the year 2015. The duration of the song is 2:27. Download English songs online from JioSaavn.